Honeywell MCS-NO-A-50A 50A Solid Core Current Sensor Normally Open

The Honeywell/Niagara MCS-NO-A-50A is a solid-core current switch with an adjustable trip-point range of 0.75 A to 50 A. Designed for professional building automation, life-safety, and security installations, solid-core current switches of this type are used to monitor the presence or absence of current flow in a monitored circuit, providing a dry-contact output signal to a controller or monitoring panel when current exceeds or falls below the set threshold. The adjustable range makes this unit suitable for a broad spectrum of load monitoring applications, from small auxiliary circuits to larger mechanical or electrical loads commonly found in commercial and industrial facilities.

Key features & benefits

• Adjustable Trip-Point Range — Spans 0.75 A to 50 A, allowing field technicians to configure the switch for a wide variety of monitored load conditions without swapping components.
• Solid-Core Construction — The solid-core design provides a mechanically secure, fixed-aperture current path that supports reliable long-term installation in permanent wiring applications.
• Normally Open Output — The NO (normally open) contact configuration is suited for standard load-monitoring and proof-of-operation circuits in building automation and life-safety systems.
• Genuine Honeywell/Niagara Component — Factory-authentic part ensures full conformance with the quality and performance standards expected in commercial and institutional installations.